Sensory processing disorder[edit]
Main article: Sensory processing disorder
Sensory Processing Disorder (SPD) concerns having abnormal oversensitivity or undersensitivity to physical stimuli, such as touch, light, sound, and smell.[38] This may manifest itself as an inability to tolerate certain textures such as sandpaper or certain fabrics and including[clarification needed] oral toleration of excessively textured food (commonly known as picky eating), or even being touched by another individual (in the case of touch oversensitivity) or may require the consistent use of sunglasses outdoors since sunlight may be intense enough to cause discomfort to a dyspraxic (in the case of light oversensitivity). An aversion to loud music and naturally loud environments (such as clubs and bars) is typical behavior of a dyspraxic individual who suffers from auditory oversensitivity, while only being comfortable in unusually warm or cold environments is typical of a dyspraxic with temperature oversensitivity. Undersensitivity to stimuli may also cause problems. Dyspraxics who are undersensitive to pain may injure themselves without realising.[34] Some dyspraxics may be oversensitive to some stimuli and undersensitive to others.[34]